/**
 * @author Gabor Pinter
 *


- Response (Interface)
  \ AbstractResponse:
    |
	- ResponseHeader    # session id, usr, attempt... etc meta-info
    |
 	- ResponseContent (Interface)   
	  \ AbstractResponse
	     |
	     - AudioResponse
	     |
	     - ResponseContentEmpy (?EmptyResponse)


 *
ResponseInstance
  has_a: ResponseContent
 *
 *
 */
package info.pinlab.pinplayer.model.response;